/*
People in Mars represent the colors in their computers in a similar way as the Earth people. 
That is, a color is represented by a 6-digit number, where the first 2 digits are for Red, 
the middle 2 digits for Green, and the last 2 digits for Blue. The only difference is that 
they use radix 13 (0-9 and A-C) instead of 16. Now given a color in three decimal numbers 
(each between 0 and 168), you are supposed to output their Mars RGB values.

Input

Each input file contains one test case which occupies a line containing the three decimal 
color values.

Output

For each test case you should output the Mars RGB value in the following format: first output 
"#", then followed by a 6-digit number where all the English characters must be upper-cased. 
If a single color is only 1-digit long, you must print a "0" to the left.
*/
#include<iostream>
#include<iomanip>
#include<string>
#include<algorithm>
using namespace std;

string int2string(int n)
{
	string s = "";
	int tmp;
	while (n)
	{
		tmp = n % 13;
		if (tmp >= 0 && tmp <= 9)
			s += tmp + '0';
		else if (tmp >= 10 && tmp <= 12)
			s += tmp - 10 + 'A';
		n /= 13;
	}
	reverse(s.begin(), s.end());
	return s;

}

int main()
{
	int R, G, B;
	cin >> R >> G >> B;
	string r, g, b;
	r = int2string(R);
	g = int2string(G);
	b = int2string(B);
	cout << "#";
	cout << setfill('0') << setw(2) << r;
	cout << setfill('0') << setw(2) << g;
	cout << setfill('0') << setw(2) << b;
	return 0;
}
